Jack-post construction



Feb. 15,1927. I ,96 V R. C. RUMBAUGH JACK POST QONSTRUCTIQN R. C.RUMBAUGH' JACK POST CONSTRUCTION Feb. 15, 1927;

F 'iled om. so, 1925 I 2 Sheets-Sheet 2 4 ATTORNEY wrmzs @(W V IPatented Feb. 15, 1927.

ROLAND C. RUMB AUGH, OF SHREVEPORT, LOUISIANA.

JACK-POST CONSTRUCTION.

Application filed October 30,1925. Serial No. 65 ,808.

' This invention relates to improvements .in

7 jack post construction for use upon and in conjunction with oil wellrigs and .derricks and which contemplates the substitution of metalparts for wooden parts now used in the construction of rigs, the woodenparts being verycostly and hard to obtain whereas the metallicstructures are stronger and last longer and are capable of withstandingrigorous service better. V

More specifically stated the post being constructed for lengths oftubing suitably anchored and including mountings upon their upper endsjournaling a walking beam thereon.

lVith the above and other objects in view,

the invention further includes the following novel features and detailsof construction, to be hereinafter more fully described, illustrated inthe accompanying drawings and pointed out in the appended claim.

In the drawings Figure 1 is a side elevation of my invention when set upin operative position.

Figure 2 is a fragmentary elevation of the post.

Figure 3-is a side elevation means for a drum well.

Figure 4 is a fragmentary top plan view of the supporting means for thedrum well.

Referring to the drawings in detail, whereof supporting in likecharacters of reference denote corresponding parts, the referencecharacter 10 indicates pairs of companion pipes having flanged endcollars 11 securedto their lower ends anchored to supporting blocks 12,preferably formed of cement. The remaining ends of the pipes 10 extendinwardly one toward the other and terminate in flattened end portions13. The outer sides of the flattened end portions having side strips orplates 14 secured thereto through the instrumentality of bolts 15 havingspacing thimbles 16 arranged thereupon. 'The upper free ends or edges ofthe spacing strips or plates 14 have inwardly extending end portions 17extended over the upper free ends of the flattened end portions 13.

Belts or lengths of strap iron 18 form loops 19 upon their oppositeends, encircling the adjacent pairs of pipes 10 forming a strengtheningmedium intermediate their lengths to overcome vibration incident tocrystallization and to prevent any inward bending thereof incident tothe manner; in

bearings for the wheel drum 27.

which the invention is used. A walking beam 20 1s mounted for rockingmovement intermediate its length upon the upper free ends of theflattened end portions 13 of the pipes 10. A connecting rod or arm 21-having a yoke 22 arranged upon its upper end receives the. outer freeend of the walking beam 20 therein. A removably'secured plate 23 carriedupon the upper side of this end of the walking beam 20 is adapted forengagement with the looped end of the yoke 22 for securing thelatterthereonJ] The opposite end of the connecting rod or arm.- 21having a longitudinally disposed elongated slot 2% therein for thereception of a pivot pin 25 extending outwardly from an arm '26 providedupon the outer endof a shaft, not shown, carried by a well drum 27including a belt 28 trained under and over the same from a suitablesource of momentum or power, not shown.

In order to provide a suitable sup ort for the wheel drum 27 I provide apair 0 spaced parallel angle bars 29 also being anchored to cementblocks 30 or the like. A substanstantially inverted U-shaped plate 31has the extremities of the legs thereof secured to the base or seat uponwhich the bearings for the wheel drum shaft may be supported.

To overcome vibratory movement of the well drum 27 incident to therotation thereof I provide spacedv parallel plates 32 having theirupper'free ends secured-to the innersides of the plate 31' while their.outer ends extending in obliquely disposed relation with respect to the.vertical centers thereof and secured to the inner sides of the anglebars 29. The clevis 33 being also correspondingly' associated at thelatter juncture for association with one end of a turn-buckle rod 34having its opposite end secured to the Brace arms 35 having their upperends secured to the outer'sides and intermediate the lengths of thearms-32 extending inwardly with respect thereto and withindepressedportions 36 formed in the outer sides thereofwhile Manifestlyfrom the foregoing description 7 Y and accompanying drawings, a metallicstructure having been defined capable of functioning and strengtheningin the manner as clearly described and illustrated ireplacing Woodenparts for iron and all of which being so mounted to overcome vibrationincident to the overcoming of crystallization and in fact providingsupporting means for Well rigs as may properly replace such rigs now inuse constructed of costly Wooden parts. I r

The invention is susceptible of various changes in its form, proportionsand minor details of construction, and the right is herein reserved tomake such changes as properly fall within the scope of the appendedclaim.

Having thus described the invention, what 15 end portions, plate memberscarried by the 20 flattened portions having their upper edges bent overthe extremities thereof, bolt members passed through the flattened endportions of the sections and plates, spacing thimbles carried by thebolts and a Walking 25 beam fulcrumed upon the seat defined.

In testimony whereof I afiix my signature.

ROLAND o. RUMBAUGH.

